The Rittenhouse Square lounge Strongbox, which opened at 2029 Walnut St. in March, is closed for regular business till Labor Day, says owner Brett Perloff.

"Due to a few factors including the annual exodus to the shore of our clientele, the current economic state and our venue becoming more and more popular for private events, we have decided ... to take advantage of the slowdown in order to complete renovations and tweaking of our product," he said in an e-mail. The club was closed last Saturday night.

Perloff, whose company Perl Media is handling nightlife promotions in Atlantic City's Chelsea Hotel with Premiere Hospitality Group, said Strongbox is available for private parties and special events. Thursday night, he is running a victory party for regular customer Brian Lemke, who last week won the $5,000 buy-in, no-limit hold 'em event at the World Series of Poker in Las Vegas.